MessagePack is an efficient binary serialization format. It lets you exchange data among multiple languages like JSON. But it's faster and smaller. Small integers are encoded into a single byte, and typical short strings require only one extra byte in addition to the strings themselves.

License

Contributing

The source for msgpack-c is held at msgpack-c github.com site.

To report an issue, use the msgpack-c issue tracker at github.com.

Using Msgpack

Header only library for C++

When you use msgpack on C++03 and C++11, you just add msgpack-c/include to your include path. You don't need to link any msgpack libraries.

e.g.)

g++ -I msgpack-c/include your_source_file.cpp

If you want to use C version of msgpack, you need to build it. You can also install C and C++ version of msgpack.

Building and Installing

Install from git repository

Using autotools

You will need gcc (4.1.0 or higher), autotools.

For C: C++03 and C:

$ git clone https://github.com/redboltz/msgpack-c/tree/cxx_separate
$ cd msgpack-c
$ ./bootstrap
$ ./configure
$ make
$ sudo make install

For C++11:

$ git clone https://github.com/msgpack/msgpack-c.git
$ cd msgpack-c
$ ./bootstrap
$ ./configure CXXFLAGS="-std=c++11"
$ make
$ sudo make install

You need the compiler that fully supports C++11.

Using cmake

CUI

You will need gcc (4.1.0 or higher), cmake.

$ git clone https://github.com/msgpack/msgpack-c.git
$ cd msgpack-c
$ cmake .
$ make
$ sudo make install

If you want to setup C++11 version of msgpack, execute the following command:

$ git clone https://github.com/msgpack/msgpack-c.git
$ cd msgpack-c
$ cmake -DMSGPACK_CXX11=ON .
$ sudo make install

You need the compiler that fully supports C++11.

GUI on Windows

Clone msgpack-c git repository.

$ git clone https://github.com/msgpack/msgpack-c.git

or using GUI git client.

e.g.) tortoise git https://code.google.com/p/tortoisegit/

Launch cmake GUI client. http://www.cmake.org/cmake/resources/software.html
Set 'Where is the source code:' text box and 'Where to build the binaries:' text box.
Click 'Configure' button.
Choose your Visual Studio version.
Click 'Generate' button.
Open the created msgpack.sln on Visual Studio.
Build all.

Install from package

Install from package for this branch (poc/0.6) is not supported yet.

Code Example

#include <msgpack.hpp>
#include <vector>
#include <string>
#include <iostream>

int main() {
    // This is target object.
    std::vector<std::string> target;
    target.push_back("Hello,");
    target.push_back("World!");

    // Serialize it.
    msgpack::sbuffer sbuf;  // simple buffer
    msgpack::pack(&sbuf, target);

    // Deserialize the serialized data.
    msgpack::unpacked msg;    // includes memory pool and deserialized object
    msgpack::unpack(msg, sbuf.data(), sbuf.size());
    msgpack::object obj = msg.get();

    // Print the deserialized object to stdout.
    std::cout << obj << std::endl;    // ["Hello," "World!"]

    // Convert the deserialized object to staticaly typed object.
    std::vector<std::string> result;
    obj.convert(&result);

    // If the type is mismatched, it throws msgpack::type_error.
    obj.as<int>();  // type is mismatched, msgpack::type_error is thrown
}

Documents

You can get addtional information on the wiki:

https://github.com/msgpack/msgpack-c/wiki/cpp_overview